Then and Now

Joliet Junior College moved to our main campus location in 1969 occupying seventeen temporary buildings while construction was initiated and completed on Phase I-A (A-G buildings plus the boiler house) in 1972 and Phase I-B (H and J Buildings) in 1974. Our first steps towards energy conservation and sustainability initiatives began before the construction was started for Phase I-B. Listed below are sustainability initiatives that have been implemented.


  • 1972 - In-house staff lowered Heating Water temperature and raised Cooling Water temperature to achieve energy savings
  • Boiler shutdown on nights/mild winters
  • 1976 - lowered domestic water temperature setting to 110 degrees Fahrenheit
  • Installed flow restrictors in all domestic water taps
  • Complied with Directive by then Governor Jim Thompson to implement an Energy Savings Plan.
  • Disconnection and removal of Natural Gas fired Fireplace on Bridge.
  • 1979 - Replaced all 400 Watt High Pressure Sodium road/parking lighting with 180 Watt Low Pressure Sodium Fixtures.
  • Removed every other row of 400 Watt can lighting in the High Bay Concourse areas.
  • 1978 - Disconnected one of two ballasts in classrooms fixtures where practical.
  • 1978 - Use of four foot 34 Watt-Miser fluorescent bulbs in place of 40 watt bulbs.
  • Replaced 120 Watt reflector floor lamps with 75 Watt ER 30 bulbs.
  • Adjusted mixed air temperature of Air Handlers warmer.
  • Fabricated a Solar Panel to heat water for shop. ( Made the Herald News)
  • September 15, 1978 - Letter to Capital Development Board, JJC to participate in free Energy Audit.
  • March 15, 1978 installed Enthalpy controls in AHU units


  • Obtained an Energy Grant – December 4, 1980 to conduct an Energy Audit resulting in the 1980 thru 1983 Energy Retrofit Phase I and II
  • Reduce outside air quantities by installation of new dampers, controls, exhaust fans and rebalancing. 1st year savings 6.982 billion BTU and $23,477 in Natural Gas. Payback 3.35 years.
  • Reduce Air Handler speed in selected areas. 1st year savings of 812 million BTU’s and $8,166 in electrical energy costs.
  • Replace incandescent lamps with elliptical reflector incandescent lamps. Cafeteria, 1st year savings 3 million BTU’s or $415. Payback 6.06 years.
  • Installed new hot water heaters and shut down boilers during summer. Estimated. 1st year savings $4,220, 10 year $101,120. Payback 5.6 years
  • Installation of turbulators in Boiler tubes.
  • Chilled Water reset controls on Chillers. (not reliable)
  • Installed Time clock controls on exhaust fans.
  • 1985 Installed Johnson Control 85/20 Automated Controls System. The Energy Management System as it exists today represents a significant investment by Joliet Junior College. The investment has continued to pay back dividends resulting in a positive impact on the budget over the years.


  • 1990 Energy cost savings option study done by EDS, Engineering Design Services
  • 1993 Installation of Self-Generation Engine. 1 year running, Rider 27, Annual savings $216,000 1994 thru 2006. 5 year payback.
  • 1996 Johnson Control Performance Contract.
  • Consisted of Steam Trap repairs and replacements (24)

Environmental Impact – Every kilowatt hour of unused electricity prevents the emission of 1.5 pounds of carbon dioxide, 5.8 grams of sulfur dioxide (acid rain component),and 2.5 grams of nitrogen oxide (acid rain and smog). Given this statement JJC has taken the following steps to reduce our KW HR usage.

  • Retrofitting classroom lighting to T-8 3500 lamps and Electronic ballast
  • Replaced sixty-four (64) Mercury Vapor fixtures with eighteen (18) 400 Watt Metal Halide fixtures in the Gymnasium.
  • Replaced seven hundred (700) 75 Watt recessed light fixtures with three hundred-fifty (350) 2 light T-8 3500 with Electronic ballast.
  • Retro fitted one hundred-thirty (130) 400 Watt Mercury Vapor concourse fixtures with 250 Watt Metal Halide.
  • Replaced incandescent fixtures in H building with 2 lights T-8 3500 with Electronic ballast.

An annual projected Savings for Lighting Enhancements at all Joliet Junior College campuses was:

  • Main Campus: $104,947
  • North Campus: $12,696
  • City Center Campus: $5,550
  • Replaced ten (10) motors of 10 horse power. or greater with new High Efficiency Motors, three (3) 15 h.p.; three (3) 50 h.p.; and four (4) 10 h.p.. Annual projected savings $4,524
  • Forty-five (45) Air Handler coils were pressure washed to increase efficiency. Annual Projected Savings $8,185
  • 1998 – Replaced Roof Top units at City Center
  • Installed Self-closing faucets in restrooms.
  • Installed Automatic flush valves in restrooms.
  • Installed light sensor controls for two levels of lighting for the concourses and bridge.
  • Installed Variable Frequency Drive controls on Cooling Towers

2000 to Present

Replaced old style exit lights with Solid State LED Exit light replacements

Decision was made not to compromise Safety for Energy Conservation resulted in the following:

    • 2003 – Parking Lot light improvements (removal of 180W LPS to 400W Metal Halide)
  • 2004 - Parking Lot light improvements (removal of 180W LPS to 400W Metal Halide)
  • 2005 – Road Light Improvements (removal of 180W LPS to 400W Metal Halide)
  • 2004 - Steam Line replacement
  • Operational running pressure of the Boilers reduced
  • 2005 – Replacement of Gas fired Absorption Cooling unit with a Trane EarthWise CenTraVac Chiller, proven track record as literally the Worlds most efficient, lowest emissions chiller. 16-25% more efficient, 0.48KW/Ton compared to 0.56-0.6KW/Ton. All pumps are VFD controlled.
  • 2006 - Occupancy sensors were installed in classrooms and laboratories to reduce wasted energy
  • 2007 - Sewer repairs were initiated to correct
  • 2007 – New burners installed on Boilers, savings yet to be determined.
  • 2009 – Cafeteria Shade system
  • 2009 – Bathroom renovations, ½ GPM water savings faucets, LED lights
  • 2009 – Classroom renovations, new efficient light fixtures.
  • 2009 - Signed both the Illinois Sustainability Compact and the American College and University Presidents’ Climate Commitment Compact.
  • 2009 – Final design of Campus Center which includes green technologies, geothermal heating and cooling, photovoltaic panels, LED lighting, green roofs, day light harvesting, and LEED Silver rating.
  • 2009 – Final Design of Facility Service building anticipated to meet LEED Silver requirements.
  • 2010 – Lighting retrofit completed for all campuses. Installation of T8 28W 5K fluorescent and compact fluorescent bulbs. Install 100W fluorescent lamps to replace 250WMH lamps in 130 concourse fixtures. 150W per fixture savings. 19,500 watt savings per run hour or $2.10 per hour. Resulting in an approximate energy savings of $48,591 per United Energy Group.
  • 2010 – Completion of new Greenhouse facility, LEED certified construction.
  • 2010 – Schematic Design completed for future Health Professions building, Automotive Expansion, and Natural Science addition all of which are anticipated to meet LEED Silver requirements.
  • 2010 – Completion of new Greenhouse facility, LEED certified construction.
  • 2010 – Schematic Design completed for future Health Professions building, Automotive Expansion, and Natural Science addition all of which are anticipated to meet LEED Silver requirements.
  • 2010 – Installed energy efficient hand dryers in all restroom, removing paper towels
  • 2010 – Installed shade system in J cafeteria space
  • 2011 – Opening of the Campus Center building achieving LEED Gold certification
  • 2011 – Opening of the Facility Services building achieving LEED Gold certification
  • 2011 – Opening of the Automotive Expansion achieving LEED Silver certification
  • 2012 – Opening of the Natural Science addition and renovation achieving LEED Silver certification
  • 2013 – Opening of the Health Professions Building achieving LEED Gold certification.
  • 2013 – Upgrade of  the chiller system creating a loop system utilizing energy efficient chillers and pumps
  • 2014 – Completion of the City Center "core and shell" designed to achieve LEED Silver certification
  • 2014 - Replace the light heads on ring road on main campus with LED Reduced from 460 watt lamps to 168 watt lamps.
  • 2014 - Replace ring road light heads at Weitendorf with LED Reduced from 460 watt lamps to 168 watt lamps
  • 2014 - Replaced fluorescent tubes with LED retro kit in B Building hallways. Reduced 86watt lamps to 39 watt lamps.
  • 2014 - Replaced J ground floor replaced 100 watt halogen lamps with 27 watt LED
  • 2014 - D-2001 and 2002 replaced 75 watt flood lamps with 25 watt LED
  • 2014 - H-building replaced all incandescent lamps with LED reduced from 75 watt lamps to 25 watt lamps
  • 2014 - H building installed lighting relays to turn off lights when outdoor lighting is at an adequate level.
  • 2014 - Installed motion sensors in J 1st café area.
  • 2014 - Building Automation System replacement at Romeoville campus.
  • 2014 - New energy efficient boilers at Romeoville campus.
  • 2014 - Added Pumps and VFD drives to control the hot water circulation that adjusts flow and temperature through the building loop.
  • 2014 - SEDAC C-G retro-commissioning recommendations HVAC system to tighten operation schedule and adjusted temperature sensors to improve operation of the outside air dampers.
  • 2014 - SEDAC H, J, and K retro-commissioning recommendations HVAC system to tighten operation schedule of the building to improve heat and cooling operations. 
  • 2014 - Vending Machine reduce lighting, turned lights off.
  • 2014 - Power curtailment in May, July, and August of 2014.
  • 2014 – Replaced HVAC units on the Renaissance center to energy efficient models.
  • 2015 – Replaced parking lot lighting at Weitendorf from 400 watt Metal Halide to 168 watt LED.
  • 2015 – Replaced 50 watt halogen lamps in the Bookstore to 12 watt LED.
  • 2015 – Installation of Building Automation System at Weitendorf campus, providing control over HVAC systems.
  • 2015 – Added VFD's to Sub-T chilled water system to provide improved control of flow and reduce energy usage.
  • 2015 - Replace 150 watt compact fluorescent fixtures in S-T concourse with LED 90 Watt fixtures.


Background Energy Data

  • 1 therm = 29.3 KWHR
  • 1 therm produces 1.7 Lbs of CO2
  • 1 Kw hr produces .866 Lbs of CO2
  • Kw hr equivalent of 1 therm produces 25.37 Lbs of CO2
  • 1 therm cost $.75
  • 1 Kw hr cost $.085
  • 29.3 Kw hrs = 1 therm
  • Heat equivalent cost of Kwhr to Therm = Kwhr x $0.085 x 29.3 = $2.49

The five (5) story High Rise building at City Center Campus is heated with electricity. Cost is three (3) times higher to heat with Electricity than with Gas and the CO2 emissions are 14.9 times greater with electricity than Gas.

  • 1 gallon of Gasoline produces 19.5 lbs of CO2
  • 1 gallon of Liquid Petroleum Gas produces 13 lbs of CO2
  • 1 gallon of Propane produces 12.669 lbs of CO2
  • 1 gallon of Oil produces 22 lbs of CO2
  • 1 gallon of Diesel fuel produces 22.384 lbs of CO2

Vehicles are rated on how much CO2 is emitted by the Mile which is related to the Miles per gallon.

Natural Gas Usage beyond Heating Space

Natural gas is not only used for heating. There are pieces of equipment used for Education that utilize natural gas. If programs grow so will the usage of natural gas.

  • Greenhouses
  • Gas fired Kilns – Fine Arts
  • Culinary Arts Kitchen, at Main and City Center
  • Clothes Dryers – PE, Vet Tech, Child Care

Timeline Prepared by Rudy Wolf, Energy Manager. Updated April 2010.